Product technical specifications – TCI HG7 User Manual
Page 17

I N T R O D U C T I O N
INTRODUCTION
HG7 I, O, & M Manual
15
Product Technical Specifications
Table 2 lists the major technical specifications for the HG7 Harmonic Filter.
Table 2 – HG7 ST and STC Option Harmonic Filter Technical Specifications
Voltage ratings
240, 480 and 600 V, 3 ph, 60 Hz 
380 – 415 V, 3 ph, 50 Hz 
kVar ratings
3 to 270 kVar depending on voltage.
Load types
3-phase diode bridge rectifier loads such as PWM AC drives
Load power range
7.5 -900 Hp depending on voltage, 4–710kW
See Rating and Dimension tables.
Current ratings
The included series reactors can tolerate 200% of rated current for at 
least 3 minutes. 
SCCR (short circuit current 
rating) 
Standard rating is 10kA.
Maximum elevation
3,000 feet (1,000 meters) as standard.
Maximum ambient operating 
temperature 
50°C (122°F) – Open Panel; 40°C (104°F) – Enclosed Panel.
Product must be equipped with special cooling provisions for 
operation above this temperature. 
Maximum ambient storage 
temperature 
60°C (140°F)
Maximum humidity, 
operating or storage 
95%, non-condensing.
Enclosure options
UL Type 1 enclosure 
UL Type 3R enclosure 
Agency approvals or 
certifications 
UL and cUL Listed to UL508A
Insertion Impedance
+/- 10% at full load current
Fusing and protection:
All units have internal fuse protection for the harmonic filter circuit.
Capacitors
Oil filled high endurance design (no PCBs)
